I’m running into a similar issue where the sender address is incorrect. It appears as something like email@example.com, regardless of what I select for the “Send Email From” address in the settings. I’m not even sure where it’s getting the address that is being used. I don’t have any users registered with that address.
I don’t have any SMTP override type plugins installed that I’m aware of.
Also, I’ve noticed that when I’m logged into wordpress and I use the “Send Email” option, the email sends from my email address, and not from the one I specified in the settings.
Any help resolving these issues would be much appreciated!